US

oil pumping jacks and drilling pads

Mark Ralston/AFP/Getty Images

A general view shows oil pumping jacks and drilling pads at the Kern River Oil Field where the principle operator is the Chevron Corporation in Bakersfield, California. The field is the third largest in California, fifth largest in the United States and relies mainly on the steam injection method to extract the crude oil.

A long-distance swimmer dives into the Atlantic Ocean at dawn, Friday, July 24, 2015, in Falmouth, Maine. The woman is part of a group that regularly starts their day with a 2-mile swim. Many of the swimmers keep a float tethered to their bodies for safety

Robert F. Bukaty/AP

A long-distance swimmer dives into the Atlantic Ocean at dawn on Friday, in Falmouth, Maine. The woman is part of a group that regularly starts their day with a 2-mile swim

Fisherman cast their lines off a jetty in the early morning hours as dark clouds loom over the Atlantic Ocean, Tuesday, July 21, 2015, in Bal Harbour, Fla.

Wilfredo Lee/AP

Fisherman cast their lines off a jetty in the early morning hours as dark clouds loom over the Atlantic Ocean on Tuesday, in Bal Harbour, Florida

Lightning strikes during a thunderstorm in Las Vegas, Nevada. The monsoon storm dropped heavy rain and hail in parts of the valley causing street flooding and power outages

Ethan Miller/Getty Images

Lightning strikes during a thunderstorm in Las Vegas, Nevada. The monsoon storm dropped heavy rain and hail in parts of the valley causing street flooding and power outages

The moon rises as people sit on rides at the State Fair Meadowlands, in East Rutherford, N.J.

AP Photo/Julio Cortez

The moon rises as people sit on rides at the State Fair Meadowlands, in East Rutherford, N.J.

Mass lightning bolts light up night skies by the Daggett airport from monsoon storms passing over the high deserts early Wednesday, north of Barstow, California July 1, 2015. Picture taken using long exposure

Gene Blevins/Reuters

Mass lightning bolts light up night skies by the Daggett airport from monsoon storms passing over the high deserts early Wednesday, north of Barstow, California

A Los Angeles City Fire helicopter drops water on a wildfire in Santa Clarita, Calif. About 1,000 people have been evacuated from homes as a 100-acre wildfire burns through brushy canyonlands north of Los Angeles

Rick McClure/AP

A Los Angeles City Fire helicopter drops water on a hillside fire in Santa Clarita, Calif. About 1,000 people have been evacuated from homes as a 100-acre wildfire burns through brushy canyonlands north of Los Angeles.

A combine makes a turn while harvesting in a wheat field near Mt. Hope, Kansas, USA.

Orlin Wagner/AP

A combine makes a turn while harvesting in a wheat field near Mt. Hope, Kansas, USA>

A zombie promoting "The Walking Dead" game walks amongst gamers at the opening day of the Electronic Entertainment Expo, known as E3 at the Convention Center in Los Angeles, California on June 16, 2015. Console kings Microsoft and Sony battled for players' hearts with blockbuster games and the lure of virtual worlds as the annual Electronic Entertainment Expo began in Los Angeles

Mark Ralston/AFP

A zombie promoting “The Walking Dead” game walks amongst gamers at the opening day of the Electronic Entertainment Expo, known as E3 at the Convention Center in Los Angeles, California

Graduates toss their caps in the air at the conclusion of the commencement ceremony for the U.S. Naval Academy Class of 2015 in Annapolis...Graduates toss their caps in the air at the conclusion of the commencement ceremony for the U.S. Naval Academy Class of 2015 in Annapolis, Maryland May 22, 2015.

Kevin Lamarque/Reuters

Graduates toss their caps in the air at the conclusion of the commencement ceremony for the U.S. Naval Academy Class of 2015 in Annapolis, Maryland on Friday

Workers clean up an oil slick along the coast of Refugio State Beach in Goleta...Workers clean up an oil slick along the coast of Refugio State Beach in Goleta, California, United States, May 20, 2015. A pipeline ruptured along the scenic California coastline on Tuesday, spilling some 21,000 gallons (79,000 liters) of oil into the ocean and on beaches before it could be secured, a U.S. Coast Guard spokeswoman said

Lucy Nicholson/Reuters

Workers clean up an oil slick along the coast of Refugio State Beach in Goleta, California, United States on Wednesday. A pipeline ruptured along the scenic California coastline on Tuesday, spilling some 21,000 gallons (79,000 liters) of oil into the ocean and on beaches before it could be secured

 Investigators and first responders work near the wreckage of Amtrak Northeast Regional Train 188, from Washington to New York, that derailed yesterday May 13, 2015 in north Philadelphia, Pennsylvania. At least six people were killed and more than 200 others were injured in the crash

Win McNamee/Getty Images

Investigators and first responders work near the wreckage of Amtrak Northeast Regional Train 188, from Washington to New York, that derailed yesterday on Wednesday in north Philadelphia, Pennsylvania

US President Barack Obama and Japanese Prime Minister Shinzo Abe attend official welcoming ceremonies on the South Lawn of the White House in Washington, DC, April 28, 2015.

Mandel Ngan/AFP

US President Barack Obama and Japanese Prime Minister Shinzo Abe attend official welcoming ceremonies on the South Lawn of the White House in Washington, DC on Tuesday

The Empire State Building is lit in red ...The Empire State Building is lit in red and purple April 14, 2015 in New York as part of the effort to bring attention to the 219 missing Nigerian schoolgirls kidnapped by Boko Haram a year ago on April 14, 2014.  AFP PHOTO /  TIMOTHY  A. CLARYTIMOTHY A. CLARY/AFP/Getty Images

Timothy A.Clary/AFP/Getty

The Empire State Building is lit in red and purple in New York as part of efforts to bring attention to the 219 missing Nigerian schoolgirls kidnapped by Boko Haram a year ago. 

A worker lowers himself from a scaffold in front of a Hillary Clinton sign near her campaign headquarters in the Brooklyn borough of New York, April 14, 2015. An unknown entity placed  Don t say  signs outside Clinton's Brooklyn Heights headquarters before her announcement Sunday

Brendan McDermid/Reuters

A worker lowers himself from a scaffold in front of a Hillary Clinton sign near her campaign headquarters in the Brooklyn borough of New York on Tuesday

Fans listen to David Guetta at the Coachella Valley Music and Arts Festival in Indio, California.

Lucy Nicholson/Reuters

Fans listen to David Guetta at the Coachella Valley Music and Arts Festival in Indio, California.

A woman does acrobatics as she waits for a band to start playing at the Coachella Valley Music and Arts Festival in Indio, California

Lucy Nicholson/Reuters

A woman does acrobatics as she waits for a band to start playing at the Coachella Valley Music and Arts Festival in Indio, California.

Construction workers Alex Hernandez (R) and Raul Buenrostro (L) begin demolition of a swimming pool at an apartment complex on April 8, 2015 in Hayward, California.  As California enters its fourth year of severe drought, some California residents are opting to have their home swimming pools removed as they face a mandatory 25 percent reduction in water use.

Justin Sullivan/Getty Images

Construction workers begin demolition of a swimming pool at an apartment complex in Hayward, California as the state enters its fourth year of drought. Some residents are having their pools removed as they face a mandatory 25% reduction in water use.

A protester pauses by a glass memorial on the spot where Charly Leundeu Keunang, 43, was shot by police on skid row, during a march to commemorate the more than 617 people they say have been killed by law enforcement in LA County since 2000, in Los Angeles, California

Lucy Nicholson/Reuters

Protester pauses by a glass memorial on the spot where Charly Leundeu Keunang, 43, was shot by police on skid row, during a march to commemorate the more than 617 people they say have been killed by law enforcement in LA County since 2000

US Secretary of State John Kerry looks at the view of Lake Geneva from his hotel room as the Iran nuclear talks continue, in Lausanne, Switzerland.

Laurent Gillieron/EPA

US Secretary of State John Kerry looks at the view of Lake Geneva from his hotel room as the Iran nuclear talks continue, in Lausanne, Switzerland.